76501609 has 2 divisors, whose sum is σ = 76501610. Its totient is φ = 76501608.

The previous prime is 76501603. The next prime is 76501643. The reversal of 76501609 is 90610567.

It is an a-pointer prime, because the next prime (76501643) can be obtained adding 76501609 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74442384 + 2059225 = 8628^2 + 1435^2 .

It is a cyclic number.

It is not a de Polignac number, because 76501609 - 2⁹ = 76501097 is a prime.

It is not a weakly prime, because it can be changed into another prime (76501603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38250804 + 38250805.

It is an arithmetic number, because the mean of its divisors is an integer number (38250805).

Almost surely, 2^76501609 is an apocalyptic number.

It is an amenable number.

76501609 is a deficient number, since it is larger than the sum of its proper divisors (1).

76501609 is an equidigital number, since it uses as much as digits as its factorization.

76501609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 76501609 is about 8746.5198221921. The cubic root of 76501609 is about 424.5122136069.

The spelling of 76501609 in words is "seventy-six million, five hundred one thousand, six hundred nine".